Java/C2/Arithmetic-Operations/English-timed

Time'	Narration
00:01	Welcome to the tutorial on Arithmetic Operations in Java.
00:06	In this tutorial, you will learn about the various Arithmetic Operations namely Addition Subtraction Multiplication Division and How to use them.
00:16	For this tutorial we are using Ubuntu 11.10, JDK 1.6 and Eclipse 3.7.
00:24	To follow this tutorial you must have eclipse installed on your system
00:28	and you must know how to create, save and run a file in Eclipse.
00:33	If not, for relevant tutorial please visit our website as shown.
00:43	Here is a list of operators and the mathematical operations they perform plus symbol for addition minus for subtraction asterisk for multiplication front slash for division
00:55	We shall look at each of them in detail.
01:05	Here We have Eclipse IDE and the skeleton required for the rest of the code.
01:11	We have created a class by name Arithmetic Operations and added the main method.
01:17	Let us add some variables.
01:22	int x = 5;
01:27	'int y = 10; print result
01:35	x and y will be the operands and the result will store the output of operations.
01:42	Let us add them and print the result. Result= x+y; system. out. println 'in parantesis result
02:10	Save it with Control S and control F11 to Run
02:17	We see, that the output of addition is stored and the value has been printed
02:25	Now Let us change the values . x=75,y = 15
02:38	Save it Run
02:43	we see that the output has changed accordingly
02:48	Now let us try negative values. 'y = -25.
02:57	Save Run.
03:02	we see that the output of 75 plus -25 has been printed
03:11	Now let us try subtraction. 'y = 5 and change x+y to x-y
03:25	Save it Run.
03:32	we see that the output of 75-5 has been printed,
03:39	Now Let us try multiplication. Change minus to asterisk
03:47	Save Run.
03:52	we see that by using asterisk we could multiply 75*5. .
03:59	Now let us try division Remove asterisk and type slash
04:08	Save it Run.
04:14	As we can see, the output is as expected.
04:18	Now let us see what happens when the expected result is a decimal point number.
04:24	Change 5 to 10
04:28	The result must be 7.5.
04:30	So let us change the result to a float.
04:43	Save it Run.
04:51	Note that although the expected result is 7.5, we get output as 7.0
04:57	This is because both the operands involved in the division are integers.
05:02	Let us change y to a float. y=10f
05:16	Save Run.
05:22	Now we can see that the result is as expected.
05:25	Keep in mind that when the expected result is a float, one of the operands must be a float to get the expected output.
05:33	Now let us see what happens when there is more than one operator.Remove all the operands
05:48	int result= 8+4-2. Save it ,run
06:09	As we can see, the output is as expected.
06:13	Now Change minus to a s lash
06:20	Now the output would be 6 if the addition is done before division.
06:25	Or it would be 10 if division is done before addition.
06:30	Let us Run and see the output.
06:38	As we can see, the output is 10 and the division is done before addition. This is because the division operator has more precedence than the addition operator.
06:50	In such situations, if we need to override the precedence, we use parentheses.
07:04	By adding parentheses, we instruct Java to do the addition before the division.
07:10	Let us run the file now.
07:16	As we can see, addition has been performed first and the output is 6 as expected.
07:23	As a rule, keep in mind to use parentheses when the order of operations is not clear.
07:37	This brings us to the end of this tutorial.
07:40	we have learnt
07:41	How to perform basic mathematical operations in Java.
07:44	operator precedence, and,
07:46	How to override it.
07:49	As an assignment for this tutorial Find out what is meant by the modulo operator and what it does.
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Contributors and Content Editors

Arya Ratish, Gaurav, Krupali, PoojaMoolya, Priyacst, Sandhya.np14, Sneha